MENU
Which of the following encryption algorithms are based on block ciphers?
Suggested Answer: B, C, D
Get Premium GISP Questions
as Interactive Web-Based Practice Test or PDF
Real Exam Format
Detailed Explanations
Instant Access
Get Your Practice Test
20 comments · newest first
JO
Josefa
1 month ago
I hope I get this right in the exam.
CH
Charlena
1 month ago
Yes, RC5 is a block cipher. I remember that!
LO
Lovetta
2 months ago
I feel confused about RC5. Is it block?
TO
Tom
2 months ago
RC4 is a stream cipher, not block.
JA
Jamey
2 months ago
Yeah, Rijndael too! It's the basis for AES.
MA
Maile
2 months ago
I think Twofish is a block cipher.
ED
Edelmira
2 months ago
Wait, are you sure Twofish is still used?
LI
Lili
2 months ago
I thought RC5 was outdated?
RA
Ranee
3 months ago
RC4 is a stream cipher, not block.
FE
Felix
3 months ago
Rijndael is the same as AES, right?
LA
Lamonica
3 months ago
Twofish is definitely a block cipher!
ZI
Zita
3 months ago
Wait, are you sure Twofish is still used?
BA
Barabara
3 months ago
I thought RC5 was outdated?
JE
Jeannetta
4 months ago
RC4 is a stream cipher, not block.
ED
Edison
5 months ago
Rijndael is the same as AES, right?
LE
Leigha
5 months ago
Twofish is definitely a block cipher!
ES
Estrella
6 months ago
I'm a bit confused; I thought RC5 was a block cipher too, but now I'm second-guessing myself.
ME
Melissia
6 months ago
I feel like I saw a question about block ciphers in practice, and I think both Twofish and Rijndael were mentioned there.
BU
Bulah
6 months ago
I remember studying that RC4 is a stream cipher, so it can't be one of the answers.
EM
Emogene
6 months ago
I think Twofish and Rijndael are definitely block ciphers, but I'm not sure about RC5.